/Engine/Source/Developer/Localization/Public/PortableObjectFormatDOM.h
FPortableObjectEntryKey ( const [FString](API\Runtime\Core\Containers\FString) & InMsgId, const [FString](API\Runtime\Core\Containers\FString) & InMsgIdPlural, const [FString](API\Runtime\Core\Containers\FString) & InMsgCtxt )